Home / 639,821,720.80-959,732,581.20-589,433,240.80

Finding the Fourth Proportional to 639,821,720.80, 959,732,581.20 and 589,433,240.80

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Solution

The fourth proportional to 639,821,720.80, 959,732,581.20 and 589,433,240.80 is: 884,149,861.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,821,720.80 : 959,732,581.20 = 589,433,240.80 : x
  2. Step 2: Convert to fraction form
    639,821,720.80/959,732,581.20 = 589,433,240.80/x
  3. Step 3: Cross multiply
    639,821,720.80x = 959,732,581.20 × 589,433,240.80
  4. Step 4: Simplify right side
    639,821,720.80x = 565,698,285,638,065,152
  5. Step 5: Solve for x
    x = 565,698,285,638,065,152/639,821,720.80
  6. Step 6: Final answer
    x = 884,149,861.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.